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95 ford thunderbird lx v8 4.6 is burning to rich on one side
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tprxdarkslayer
New User
Aug 1, 2011, 6:16 PM
Post #1 of 4
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95 ford thunderbird lx v8 4.6 is burning to rich on one side
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i have a 95 ford thunderbird v8 4.6
on the driverside of the motor its putting a black dust on my new plugs and on the passager side is fine. it runs fine on the freeway but when it is in town and alot of stop and go it shacks and shimmies also gives off a rich gas smell and doesnt have a continues stream of exhaust air. all spark plugs are new best auto lites new coils and wires just need to know whats making my car burn rich on that one side and how to stop it also i was getting 120 miles half tank now im down to 130 1/4 tank. and no lights have came on
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 1, 2011, 6:20 PM
Post #2 of 4
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Re: 95 ford thunderbird lx v8 4.6 is burning to rich on one side
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You're right. It does sound like one bank is running rich but it's not going to be that simple to find the cause. You are going to need an experienced performance tech to work with a scan tool to try to determine the cause.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Aug 1, 2011, 6:44 PM
Post #3 of 4
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Re: 95 ford thunderbird lx v8 4.6 is burning to rich on one side
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One thing you could try since you don't have a scan tool is to unplug the O2 sensor before the catalyst on that side (Bank1 sensor 1). If you have a stuck lean O2 sensor, that can cause the engine controller to trim the right bank to very rich. If it clears up after you unplug the sensor, more than likely the O2 sensor is faulty. Make sure you have heater voltage and ground on the O2 sensor circuit with the ignition on when replacing the sensor.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Aug 1, 2011, 6:48 PM)
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Sidom
Veteran
/ Moderator
Aug 1, 2011, 8:06 PM
Post #4 of 4
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Re: 95 ford thunderbird lx v8 4.6 is burning to rich on one side
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Hmmmm that's odd the check engine light hasn't come on. You would think you would see a P0174, or a P0175 if there wasn't a condition causing the 174.
Might not be a bad idea to have the codes pulled anyway to see if there is any help there.......Who knows a KOER test might just reveal something.....
I think HTs right, without a scanner to see what the fuel trims & O2s are doing this would be real tough to track down...
You can follow D's suggestion on the O2, also look for any obvious vacuum leaks on that side. After that it would probably be best to take it in to checked out..
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